22141521 has 12 divisors (see below), whose sum is σ = 32032260. Its totient is φ = 14737920.

The previous prime is 22141519. The next prime is 22141541. The reversal of 22141521 is 12514122.

22141521 is a `hidden beast` number, since 2 + 2 + 141 + 521 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 20793600 + 1347921 = 4560^2 + 1161^2 .

It is not a de Polignac number, because 22141521 - 2¹ = 22141519 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22141494 and 22141503.

It is not an unprimeable number, because it can be changed into a prime (22141541) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5761 + ... + 8801.

It is an arithmetic number, because the mean of its divisors is an integer number (2669355).

Almost surely, 2^22141521 is an apocalyptic number.

It is an amenable number.

22141521 is a deficient number, since it is larger than the sum of its proper divisors (9890739).

22141521 is a wasteful number, since it uses less digits than its factorization.

22141521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3856 (or 3853 counting only the distinct ones).

The product of its digits is 160, while the sum is 18.

The square root of 22141521 is about 4705.4777653284. The cubic root of 22141521 is about 280.8034787233.

Adding to 22141521 its reverse (12514122), we get a palindrome (34655643).

The spelling of 22141521 in words is "twenty-two million, one hundred forty-one thousand, five hundred twenty-one".